UL 489 Circuit Breaker Trips

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195 Products

DIN-Rail Mount Branch Circuit Breakers

Mount these circuit breakers directly to DIN rail to protect equipment and wiring in an area of your facility from overloads and short circuits. They meet UL 489 requirements for branch circuit protection and are certified as current limiting, so they protect equipment by minimizing passing current during a short circuit. Because they are thermal-magnetic, these breakers trip two ways. They either trip when heat is generated slowly by consistent low-level overload current, or they trip quickly when the magnetic coil senses a high-current short circuit.

Breakthrough current is the maximum current that the circuit breaker can safely stop in the event of a short circuit.

B-trip circuit breakers are best for protecting sensitive equipment, such as programmable logic controllers (PLCs) and sensors, which could be damaged by a spike in current. These circuit breakers will trip if a rush of current reaches 3 to 5 times their rated current.

C-trip circuit breakers are the most common. They’re best for applications such as lighting and control panels, where equipment startup causes a moderate spike in current. They won’t trip until a rush of current reaches 5 to 10 times their rated current.

D-trip circuit breakers prevent nuisance tripping, so they are best for equipment that has a high spike in current at startup, such as transformers, power supplies, and heaters. They will not trip unless a rush of current reaches 10 to 20 times their rated current.

Auxiliary contacts send a signal to other equipment when the circuit trips. They can activate a warning light, initiate a shutdown, or start a backup power source.

Distribution bars simplify wiring by powering multiple adjacent circuit breakers without needing separate wires for each one. This cuts down on assembly time and space.

Extension terminals raise the wire connection point above distribution bars for easy access to connect power to a set of circuit breakers.

Distribution bar terminal covers shield unused, live terminals on distribution bars to prevent injury and damage.

For technical drawings and 3-D models, click on a part number.

Circuit Breakers

1 Pole

2 Pole

3 Pole

B Trip Type
Choose a Current, A	Voltage	Frequency, Hz	Breakthrough Current	For DIN Rail Size, mm	Wire Connection Type	Ht.	Wd.	Dp.	Temp. Range, °F	Specifications Met		Each
1 Pole—Toggle Style
1, 5, 10, 15, 20, 30	277V AC/48V DC	50/60	__	35	Screw-Clamp Terminals	4.13"	0.7"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	000000
2 Pole—Toggle Style
1, 5, 10, 15, 20, 30	277V AC/480YV AC/96V DC	50/60	__	35	Screw-Clamp Terminals	4.13"	1.4"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	00000
3 Pole—Toggle Style
1, 5, 10, 15, 20, 30	277V AC/480YV AC	50/60	__	35	Screw-Clamp Terminals	4.13"	2.09"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	000000
C Trip Type
1 Pole—Toggle Style
35, 40, 50, 63	240V AC/48V DC	50/60	10,000 A @ 240 V AC 10,000 A @ 48 V DC	35	Screw-Clamp Terminals	4.13"	0.7"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	00000
1/2	277V AC/48V DC	50/60	10,000 A @ 277 V AC 10,000 A @ 48 V DC	35	Screw-Clamp Terminals	4.13"	0.7"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	00000
1	277V AC/48V DC	50/60	10,000 A @ 277 V AC 10,000 A @ 48 V DC	35	Screw-Clamp Terminals	4.13"	0.7"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	00000
1 1/2	277V AC/48V DC	50/60	10,000 A @ 277 V AC 10,000 A @ 48 V DC	35	Screw-Clamp Terminals	4.13"	0.7"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	00000
2	277V AC/48V DC	50/60	10,000 A @ 277 V AC 10,000 A @ 48 V DC	35	Screw-Clamp Terminals	4.13"	0.7"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	00000
3	277V AC/48V DC	50/60	10,000 A @ 277 V AC 10,000 A @ 48 V DC	35	Screw-Clamp Terminals	4.13"	0.7"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	00000
4	277V AC/48V DC	50/60	10,000 A @ 277 V AC 10,000 A @ 48 V DC	35	Screw-Clamp Terminals	4.13"	0.7"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	00000
5	277V AC/48V DC	50/60	10,000 A @ 277 V AC 10,000 A @ 48 V DC	35	Screw-Clamp Terminals	4.13"	0.7"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	0000000	00000
6	277V AC/48V DC	50/60	10,000 A @ 277 V AC 10,000 A @ 48 V DC	35	Screw-Clamp Terminals	4.13"	0.7"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	00000
7	277V AC/48V DC	50/60	10,000 A @ 277 V AC 10,000 A @ 48 V DC	35	Screw-Clamp Terminals	4.13"	0.7"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	00000
8	277V AC/48V DC	50/60	10,000 A @ 277 V AC 10,000 A @ 48 V DC	35	Screw-Clamp Terminals	4.13"	0.7"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	00000
10	277V AC/48V DC	50/60	10,000 A @ 277 V AC 10,000 A @ 48 V DC	35	Screw-Clamp Terminals	4.13"	0.7"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	0000000	00000
13	277V AC/48V DC	50/60	10,000 A @ 277 V AC 10,000 A @ 48 V DC	35	Screw-Clamp Terminals	4.13"	0.7"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	00000
15	277V AC/48V DC	50/60	14,000 A @ 277 V AC 14,000 A @ 48 V DC	35	Screw-Clamp Terminals	4.13"	0.7"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	0000000	00000
16	277V AC/48V DC	50/60	14,000 A @ 277 V AC 14,000 A @ 48 V DC	35	Screw-Clamp Terminals	4.13"	0.7"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	00000
20	277V AC/48V DC	50/60	14,000 A @ 277 V AC 14,000 A @ 48 V DC	35	Screw-Clamp Terminals	4.13"	0.7"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	0000000	00000
25	277V AC/48V DC	50/60	14,000 A @ 277 V AC 14,000 A @ 48 V DC	35	Screw-Clamp Terminals	4.13"	0.7"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	00000
30	277V AC/48V DC	50/60	10,000 A @ 277 V AC 10,000 A @ 48 V DC	35	Screw-Clamp Terminals	4.13"	0.7"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	0000000	00000
32	277V AC/48V DC	50/60	10,000 A @ 277 V AC 10,000 A @ 48 V DC	35	Screw-Clamp Terminals	4.13"	0.7"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	00000
2 Pole—Toggle Style
2, 5, 10, 15, 20	125V DC/250V DC	50/60	10,000 A @ 125 V DC 10,000 A @ 250 V DC	35	Screw-Clamp Terminals	4.13"	1.4"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	000000
35, 40, 50, 63	240V AC/96V DC	50/60	10,000 A @ 240 V AC 10,000 A @ 96 V DC	35	Screw-Clamp Terminals	4.13"	1.4"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	00000
1/2	277V AC/480YV AC/96V DC	50/60	10,000 A @ 277 V AC 10,000 A @ 480 V AC 10,000 A @ 96 V DC	35	Screw-Clamp Terminals	4.13"	1.4"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	000000
1	277V AC/480YV AC/96V DC	50/60	10,000 A @ 277 V AC 10,000 A @ 480 V AC 10,000 A @ 96 V DC	35	Screw-Clamp Terminals	4.13"	1.4"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	000000
1 1/2	277V AC/480YV AC/96V DC	50/60	10,000 A @ 277 V AC 10,000 A @ 480 V AC 10,000 A @ 96 V DC	35	Screw-Clamp Terminals	4.13"	1.4"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	000000
2	277V AC/480YV AC/96V DC	50/60	10,000 A @ 277 V AC 10,000 A @ 480 V AC 10,000 A @ 96 V DC	35	Screw-Clamp Terminals	4.13"	1.4"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	000000
3	277V AC/480YV AC/96V DC	50/60	10,000 A @ 277 V AC 10,000 A @ 480 V AC 10,000 A @ 96 V DC	35	Screw-Clamp Terminals	4.13"	1.4"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	000000
4	277V AC/480YV AC/96V DC	50/60	10,000 A @ 277 V AC 10,000 A @ 480 V AC 10,000 A @ 96 V DC	35	Screw-Clamp Terminals	4.13"	1.4"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	000000
5	277V AC/480YV AC/96V DC	50/60	10,000 A @ 277 V AC 10,000 A @ 480 V AC 10,000 A @ 96 V DC	35	Screw-Clamp Terminals	4.13"	1.4"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	0000000	000000
6	277V AC/480YV AC/96V DC	50/60	10,000 A @ 277 V AC 10,000 A @ 480 V AC 10,000 A @ 96 V DC	35	Screw-Clamp Terminals	4.13"	1.4"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	000000
7	277V AC/480YV AC/96V DC	50/60	10,000 A @ 277 V AC 10,000 A @ 480 V AC 10,000 A @ 96 V DC	35	Screw-Clamp Terminals	4.13"	1.4"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	000000
8	277V AC/480YV AC/96V DC	50/60	10,000 A @ 277 V AC 10,000 A @ 480 V AC 10,000 A @ 96 V DC	35	Screw-Clamp Terminals	4.13"	1.4"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	000000
10	277V AC/480YV AC/96V DC	50/60	10,000 A @ 277 V AC 10,000 A @ 480 V AC 10,000 A @ 96 V DC	35	Screw-Clamp Terminals	4.13"	1.4"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	0000000	000000
13	277V AC/480YV AC/96V DC	50/60	10,000 A @ 277 V AC 10,000 A @ 480 V AC 10,000 A @ 96 V DC	35	Screw-Clamp Terminals	4.13"	1.4"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	000000
15	277V AC/480YV AC/96V DC	50/60	14,000 A @ 277 V AC 14,000 A @ 480 V AC 14,000 A @ 96 V DC	35	Screw-Clamp Terminals	4.13"	1.4"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	0000000	000000
16	277V AC/480YV AC/96V DC	50/60	14,000 A @ 277 V AC 14,000 A @ 480 V AC 14,000 A @ 96 V DC	35	Screw-Clamp Terminals	4.13"	1.4"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	000000
20	277V AC/480YV AC/96V DC	50/60	14,000 A @ 277 V AC 14,000 A @ 480 V AC 14,000 A @ 96 V DC	35	Screw-Clamp Terminals	4.13"	1.4"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	0000000	000000
25	277V AC/480YV AC/96V DC	50/60	14,000 A @ 277 V AC 14,000 A @ 480 V AC 14,000 A @ 96 V DC	35	Screw-Clamp Terminals	4.13"	1.4"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	000000
30	277V AC/480YV AC/96V DC	50/60	10,000 A @ 277 V AC 10,000 A @ 480 V AC 10,000 A @ 96 V DC	35	Screw-Clamp Terminals	4.13"	1.4"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	0000000	000000
32	277V AC/480YV AC/96V DC	50/60	10,000 A @ 277 V AC 10,000 A @ 480 V AC 10,000 A @ 96 V DC	35	Screw-Clamp Terminals	4.13"	1.4"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	000000
3 Pole—Toggle Style
35, 40	240V AC	50/60	10,000 A @ 240 V AC	35	Screw-Clamp Terminals	4.13"	2.09"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	000000
50, 63	240V AC	50/60	10,000 A @ 240 V AC	35	Screw-Clamp Terminals	4.13"	2.09"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	000000
1/2	277V AC/480YV AC	50/60	10,000 A @ 277 V AC 10,000 A @ 480 V AC	35	Screw-Clamp Terminals	4.13"	2.09"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	000000
1	277V AC/480YV AC	50/60	10,000 A @ 277 V AC 10,000 A @ 480 V AC	35	Screw-Clamp Terminals	4.13"	2.09"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	000000
1 1/2	277V AC/480YV AC	50/60	10,000 A @ 277 V AC 10,000 A @ 480 V AC	35	Screw-Clamp Terminals	4.13"	2.09"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	000000
2	277V AC/480YV AC	50/60	10,000 A @ 277 V AC 10,000 A @ 480 V AC	35	Screw-Clamp Terminals	4.13"	2.09"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	000000
3	277V AC/480YV AC	50/60	10,000 A @ 277 V AC 10,000 A @ 480 V AC	35	Screw-Clamp Terminals	4.13"	2.09"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	000000
4	277V AC/480YV AC	50/60	10,000 A @ 277 V AC 10,000 A @ 480 V AC	35	Screw-Clamp Terminals	4.13"	2.09"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	000000
5	277V AC/480YV AC	50/60	10,000 A @ 277 V AC 10,000 A @ 480 V AC	35	Screw-Clamp Terminals	4.13"	2.09"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	0000000	000000
6	277V AC/480YV AC	50/60	10,000 A @ 277 V AC 10,000 A @ 480 V AC	35	Screw-Clamp Terminals	4.13"	2.09"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	000000
7	277V AC/480YV AC	50/60	10,000 A @ 277 V AC 10,000 A @ 480 V AC	35	Screw-Clamp Terminals	4.13"	2.09"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	000000
8	277V AC/480YV AC	50/60	10,000 A @ 277 V AC 10,000 A @ 480 V AC	35	Screw-Clamp Terminals	4.13"	2.09"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	000000
10	277V AC/480YV AC	50/60	10,000 A @ 277 V AC 10,000 A @ 480 V AC	35	Screw-Clamp Terminals	4.13"	2.09"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	0000000	000000
13	277V AC/480YV AC	50/60	10,000 A @ 277 V AC 10,000 A @ 480 V AC	35	Screw-Clamp Terminals	4.13"	2.09"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	000000
15	277V AC/480YV AC	50/60	14,000 A @ 277 V AC 14,000 A @ 480 V AC	35	Screw-Clamp Terminals	4.13"	2.09"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	0000000	000000
16	277V AC/480YV AC	50/60	14,000 A @ 277 V AC 14,000 A @ 480 V AC	35	Screw-Clamp Terminals	4.13"	2.09"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	000000
20	277V AC/480YV AC	50/60	14,000 A @ 277 V AC 14,000 A @ 480 V AC	35	Screw-Clamp Terminals	4.13"	2.09"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	0000000	000000
25	277V AC/480YV AC	50/60	14,000 A @ 277 V AC 14,000 A @ 480 V AC	35	Screw-Clamp Terminals	4.13"	2.09"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	000000
30	277V AC/480YV AC	50/60	10,000 A @ 277 V AC 10,000 A @ 480 V AC	35	Screw-Clamp Terminals	4.13"	2.09"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	0000000	000000
32	277V AC/480YV AC	50/60	10,000 A @ 277 V AC 10,000 A @ 480 V AC	35	Screw-Clamp Terminals	4.13"	2.09"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	000000
D Trip Type
1 Pole—Toggle Style
1	277V AC/48V DC	50/60	10,000 A @ 277 V AC 10,000 A @ 48 V DC	35	Screw-Clamp Terminals	4.13"	0.7"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	00000
2	277V AC/48V DC	50/60	10,000 A @ 277 V AC 10,000 A @ 48 V DC	35	Screw-Clamp Terminals	4.13"	0.7"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	00000
3	277V AC/48V DC	50/60	10,000 A @ 277 V AC 10,000 A @ 48 V DC	35	Screw-Clamp Terminals	4.13"	0.7"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	00000
4	277V AC/48V DC	50/60	10,000 A @ 277 V AC 10,000 A @ 48 V DC	35	Screw-Clamp Terminals	4.13"	0.7"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	00000
5	277V AC/48V DC	50/60	10,000 A @ 277 V AC 10,000 A @ 48 V DC	35	Screw-Clamp Terminals	4.13"	0.7"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	00000
6	277V AC/48V DC	50/60	10,000 A @ 277 V AC 10,000 A @ 48 V DC	35	Screw-Clamp Terminals	4.13"	0.7"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	0000000	00000
8	277V AC/48V DC	50/60	10,000 A @ 277 V AC 10,000 A @ 48 V DC	35	Screw-Clamp Terminals	4.13"	0.7"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	00000
10	277V AC/48V DC	50/60	10,000 A @ 277 V AC 10,000 A @ 48 V DC	35	Screw-Clamp Terminals	4.13"	0.7"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	00000
15	277V AC/48V DC	50/60	14,000 A @ 277 V AC 14,000 A @ 48 V DC	35	Screw-Clamp Terminals	4.13"	0.7"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	00000
20	277V AC/48V DC	50/60	14,000 A @ 277 V AC 14,000 A @ 48 V DC	35	Screw-Clamp Terminals	4.13"	0.7"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	00000
25	277V AC/48V DC	50/60	10,000 A @ 277 V AC 10,000 A @ 48 V DC	35	Screw-Clamp Terminals	4.13"	0.7"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	00000
30	277V AC/48V DC	50/60	10,000 A @ 277 V AC 10,000 A @ 48 V DC	35	Screw-Clamp Terminals	4.13"	0.7"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	00000
40	240V AC/48V DC	50/60	10,000 A @ 240 V AC 10,000 A @ 48 V DC	35	Screw-Clamp Terminals	4.13"	0.7"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	00000
2 Pole—Toggle Style
1	277V AC/480YV AC/96V DC	50/60	10,000 A @ 277 V AC 10,000 A @ 480 V AC 10,000 A @ 96 V DC	35	Screw-Clamp Terminals	4.13"	1.4"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	000000
2	277V AC/480YV AC/96V DC	50/60	10,000 A @ 277 V AC 10,000 A @ 480 V AC 10,000 A @ 96 V DC	35	Screw-Clamp Terminals	4.13"	1.4"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	000000
3	277V AC/480YV AC/96V DC	50/60	10,000 A @ 277 V AC 10,000 A @ 480 V AC 10,000 A @ 96 V DC	35	Screw-Clamp Terminals	4.13"	1.4"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	000000
4	277V AC/480YV AC/96V DC	50/60	10,000 A @ 277 V AC 10,000 A @ 480 V AC 10,000 A @ 96 V DC	35	Screw-Clamp Terminals	4.13"	1.4"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	000000
5	277V AC/480YV AC/96V DC	50/60	10,000 A @ 277 V AC 10,000 A @ 480 V AC 10,000 A @ 96 V DC	35	Screw-Clamp Terminals	4.13"	1.4"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	000000
6	277V AC/480YV AC/96V DC	50/60	10,000 A @ 277 V AC 10,000 A @ 480 V AC 10,000 A @ 96 V DC	35	Screw-Clamp Terminals	4.13"	1.4"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	000000
8	277V AC/480YV AC/96V DC	50/60	10,000 A @ 277 V AC 10,000 A @ 480 V AC 10,000 A @ 96 V DC	35	Screw-Clamp Terminals	4.13"	1.4"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	000000
10	277V AC/480YV AC/96V DC	50/60	10,000 A @ 277 V AC 10,000 A @ 480 V AC 10,000 A @ 96 V DC	35	Screw-Clamp Terminals	4.13"	1.4"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	000000
15	277V AC/480YV AC/96V DC	50/60	14,000 A @ 277 V AC 14,000 A @ 480 V AC 14,000 A @ 96 V DC	35	Screw-Clamp Terminals	4.13"	1.4"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	000000
20	277V AC/480YV AC/96V DC	50/60	14,000 A @ 277 V AC 14,000 A @ 480 V AC 14,000 A @ 96 V DC	35	Screw-Clamp Terminals	4.13"	1.4"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	000000
25	277V AC/480YV AC/96V DC	50/60	10,000 A @ 277 V AC 10,000 A @ 480 V AC 10,000 A @ 96 V DC	35	Screw-Clamp Terminals	4.13"	1.4"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	000000
30	277V AC/480YV AC/96V DC	50/60	10,000 A @ 277 V AC 10,000 A @ 480 V AC 10,000 A @ 96 V DC	35	Screw-Clamp Terminals	4.13"	1.4"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	000000
40	240V AC/96V DC	50/60	10,000 A @ 240 V AC 10,000 A @ 96 V DC	35	Screw-Clamp Terminals	4.13"	1.4"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	00000
3 Pole—Toggle Style
1	277V AC/480YV AC	50/60	10,000 A @ 277 V AC 10,000 A @ 480 V AC	35	Screw-Clamp Terminals	4.13"	2.09"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	0000000	000000
2	277V AC/480YV AC	50/60	10,000 A @ 277 V AC 10,000 A @ 480 V AC	35	Screw-Clamp Terminals	4.13"	2.09"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	000000
3	277V AC/480YV AC	50/60	10,000 A @ 277 V AC 10,000 A @ 480 V AC	35	Screw-Clamp Terminals	4.13"	2.09"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	000000
4	277V AC/480YV AC	50/60	10,000 A @ 277 V AC 10,000 A @ 480 V AC	35	Screw-Clamp Terminals	4.13"	2.09"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	000000
5	277V AC/480YV AC	50/60	10,000 A @ 277 V AC 10,000 A @ 480 V AC	35	Screw-Clamp Terminals	4.13"	2.09"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	000000
6	277V AC/480YV AC	50/60	10,000 A @ 277 V AC 10,000 A @ 480 V AC	35	Screw-Clamp Terminals	4.13"	2.09"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	000000
8	277V AC/480YV AC	50/60	10,000 A @ 277 V AC 10,000 A @ 480 V AC	35	Screw-Clamp Terminals	4.13"	2.09"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	000000
10	277V AC/480YV AC	50/60	10,000 A @ 277 V AC 10,000 A @ 480 V AC	35	Screw-Clamp Terminals	4.13"	2.09"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	000000
15	277V AC/480YV AC	50/60	14,000 A @ 277 V AC 14,000 A @ 480 V AC	35	Screw-Clamp Terminals	4.13"	2.09"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	000000
20	277V AC/480YV AC	50/60	14,000 A @ 277 V AC 14,000 A @ 480 V AC	35	Screw-Clamp Terminals	4.13"	2.09"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	000000
25	277V AC/480YV AC	50/60	10,000 A @ 277 V AC 10,000 A @ 480 V AC	35	Screw-Clamp Terminals	4.13"	2.09"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	000000
30	277V AC/480YV AC	50/60	10,000 A @ 277 V AC 10,000 A @ 480 V AC	35	Screw-Clamp Terminals	4.13"	2.09"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	000000
40	240V AC	50/60	10,000 A @ 240 V AC	35	Screw-Clamp Terminals	4.13"	2.09"	2.36"	-10° to 165°	UL 489, CSA Certified, CE Marked, IEC 60947-2	00000000	000000

Shunt Trips

Shunt Trip

Voltage	Current, A	Frequency, Hz	For DIN Rail Size, mm	Wire Connection Type	Ht.	Wd.	Dp.	Temp. Range, °F	Specifications Met		Each
12-110V AC/12-60V DC	63	50/60	35	Screw-Clamp Terminals	4.13"	0.7"	2.36"	25° to 100°	UL 489, UL Listed, CSA Certified, CE Marked, IEC 60898	00000000	000000
110-415V AC/110-230V DC	40	50/60	35	Screw-Clamp Terminals	4.13"	0.7"	2.36"	25° to 100°	UL 489, UL Listed, CSA Certified, CE Marked, IEC 60898	00000000	00000

Auxiliary Contacts

Auxiliary Contact

Voltage	Current, A	Frequency, Hz	Industry Designation	No. of Circuits Controlled	Switch Starting Position	For DIN Rail Size, mm	Wire Connection Type	Ht.	Wd.	Dp.	Temp. Range, °F	Specifications Met		Each
250V AC	6	50/60	DPST	2	1 Off (Normally Open) and 1 On (Normally Closed)	35	Screw-Clamp Terminals	3.78"	0.35"	2.36"	-10° to 165° F	UL 489, UL Listed, CSA Certified, CE Marked, IEC 60898	00000000	000000

Distribution Bars

Distribution Bar

					Terminal
For No. of Poles	No. of Terminals	Voltage	Current, A	Frequency, Hz	Ctr.-to-Ctr.	Wd.	Ht.	Wd.	Dp.	Temp. Range, °F	Specifications Met		Each
1	12	277V AC/480YV AC/96V DC	80	50/60	0.7"	0.2"	1.28"	8.06"	0.61"	-10° to 165°	UL 489, UL Recognized Component, CE Marked, IEC 60898	00000000	000000
2	12	277V AC/480YV AC/96V DC	80	50/60	0.7"	0.2"	1.28"	8.06"	0.61"	-10° to 165°	UL 489, UL Recognized Component, CE Marked, IEC 60898	00000000	00000
3	12	277V AC/480YV AC/96V DC	80	50/60	0.7"	0.2"	1.28"	8.06"	0.61"	-10° to 165°	UL 489, UL Recognized Component, CE Marked, IEC 60898	00000000	00000

Extension Terminals

Extension Terminal

For No. of Poles	Voltage	Current, A	Frequency, Hz	Wire Connection Type	Ht.	Wd.	Dp.	Temp. Range, °F	Specifications Met		Each
1, 2, 3	480V AC/96V DC	80	50/60	Screw-Clamp Terminals	2.82"	0.64"	1.23"	-10° to 165°	UL 489, UL Recognized Component, CE Marked, IEC 60898	0000000	000000

Distribution Bar Terminal Covers

Distribution Bar Terminal Cover

For No. of Terminals	Ht.	Wd.	Dp.	Material	Temp. Range, °F	Specifications Met		Each
3	0.94"	1.9"	0.63"	Plastic	-10° to 165°	UL 489, UL Recognized Component, CE Marked, IEC 60898	00000000	00000

Square D Load-Center Circuit Breakers

QO Series, 1 Pole

QO Series, 2 Pole

QO Series, 3 Pole

QOB Series, 1 Pole

QOB Series, 2 Pole

QOB Series, 3 Pole

Homeline Series, 1 Pole

Homeline
Series, 1
Tandem Pole

Homeline Series, 2 Pole

Match these circuit breakers to Square D breaker boxes or panel boards of the same manufacturer series. They meet UL 489 requirements for branch circuit protection, so they protect downstream equipment and wiring from overloads and short circuits. Because they are thermal-magnetic, these breakers trip two different ways. They either trip when heat is generated by sustained low-level overload current or quickly when the magnetic coil senses a high-current short circuit.

Circuit breakers with ground fault sensitivity will trip if they detect a current leak above 6mA. This minimizes the risk of electric shock to workers and equipment.

Breakthrough current is the maximum current that the circuit breaker can safely stop in the event of a short circuit.

For technical drawings and 3-D models, click on a part number.

QO Series
Current, A	Voltage	Frequency, Hz	Breakthrough Current	Mounting Location	Wire Connection Type	Wd.	Specifications Met		Each
1 Pole—Toggle Style
15	120V AC/240V AC/48V DC	50/60	10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC	Breaker Box	Snap On	3/4"	UL 489, UL Listed	00000000	000000
20	120V AC/240V AC/48V DC	50/60	10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC	Breaker Box	Snap On	3/4"	UL 489, UL Listed	00000000	00000
30	120V AC/240V AC	50/60	10,000 A @ 120 V AC 10,000 A @ 240 V AC	Breaker Box	Snap On	3/4"	UL 489, UL Listed	0000000	00000
40	120V AC/240V AC/48V DC	50/60	10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC	Breaker Box	Snap On	3/4"	UL 489, UL Listed	00000000	00000
2 Pole—Toggle Style
15	120V AC/240V AC/48V DC	50/60	10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC	Breaker Box	Snap On	1 1/2"	UL 489, UL Listed	00000000	00000
20	120V AC/240V AC/48V DC	50/60	10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC	Breaker Box	Snap On	1 1/2"	UL 489, UL Listed	00000000	00000
30	120V AC/240V AC/48V DC	50/60	10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC	Breaker Box	Snap On	1 1/2"	UL 489, UL Listed	00000000	00000
40	120V AC/240V AC/48V DC	50/60	10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC	Breaker Box	Snap On	1 1/2"	UL 489, UL Listed	00000000	00000
50	120V AC/240V AC/48V DC	50/60	10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC	Breaker Box	Snap On	1 1/2"	UL 489, UL Listed	00000000	00000
60	120V AC/240V AC/48V DC	50/60	10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC	Breaker Box	Snap On	1 1/2"	UL 489, UL Listed	00000000	00000
70	120V AC/240V AC/48V DC	50/60	10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC	Breaker Box	Snap On	1 1/2"	UL 489, UL Listed	0000000	000000
3 Pole—Toggle Style
15	120V AC/240V AC/48V DC	50/60	10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC	Breaker Box	Snap On	2 1/4"	UL 489, UL Listed	00000000	000000
20	120V AC/240V AC/48V DC	50/60	10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC	Breaker Box	Snap On	2 1/4"	UL 489, UL Listed	00000000	000000
30	120V AC/240V AC/48V DC	50/60	10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC	Breaker Box	Snap On	2 1/4"	UL 489, UL Listed	00000000	000000
40	120V AC/240V AC/48V DC	50/60	10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC	Breaker Box	Snap On	2 1/4"	UL 489, UL Listed	00000000	000000
QO Series with 6mA Ground Fault Sensitivity
1 Pole—Toggle Style
20	120V AC	50/60	10,000 A @ 120 V AC	Breaker Box	Snap On	3/4"	UL 489, UL Listed	00000000	000000
30	120V AC	50/60	10,000 A @ 120 V AC	Breaker Box	Snap On	3/4"	UL 489, UL Listed	00000000	000000
2 Pole—Toggle Style
20	120V AC/240V AC	50/60	10,000 A @ 120 V AC 10,000 A @ 240 V AC	Breaker Box	Snap On	1 1/2"	UL 489, UL Listed	00000000	000000
30	120V AC/240V AC	50/60	10,000 A @ 120 V AC 10,000 A @ 240 V AC	Breaker Box	Snap On	1 1/2"	UL 489, UL Listed	00000000	000000
QOB Series
1 Pole—Toggle Style
15	120V AC/240V AC/48V DC	50/60	10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC	Panel Board	Screw-Clamp Terminals	3/4"	UL 489, UL Listed	00000000	00000
20	120V AC/240V AC/48V DC	50/60	10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC	Panel Board	Screw-Clamp Terminals	3/4"	UL 489, UL Listed	00000000	00000
30	120V AC/240V AC/48V DC	50/60	10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC	Panel Board	Screw-Clamp Terminals	3/4"	UL 489, UL Listed	00000000	00000
40	120V AC/240V AC/48V DC	50/60	10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC	Panel Board	Screw-Clamp Terminals	3/4"	UL 489, UL Listed	0000000	00000
2 Pole—Toggle Style
15	120V AC/240V AC/48V DC	50/60	10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC	Panel Board	Screw-Clamp Terminals	1 1/2"	UL 489, UL Listed	00000000	00000
20	120V AC/240V AC/48V DC	50/60	10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC	Panel Board	Screw-Clamp Terminals	1 1/2"	UL 489, UL Listed	00000000	00000
30	120V AC/240V AC/48V DC	50/60	10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC	Panel Board	Screw-Clamp Terminals	1 1/2"	UL 489, UL Listed	00000000	00000
40	120V AC/240V AC/48V DC	50/60	10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC	Panel Board	Screw-Clamp Terminals	1 1/2"	UL 489, UL Listed	00000000	00000
3 Pole—Toggle Style
15	120V AC/240V AC/48V DC	50/60	10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC	Panel Board	Screw-Clamp Terminals	2 1/4"	UL 489, UL Listed	00000000	000000
20	120V AC/240V AC/48V DC	50/60	10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC	Panel Board	Screw-Clamp Terminals	2 1/4"	UL 489, UL Listed	00000000	000000
30	120V AC/240V AC/48V DC	50/60	10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC	Panel Board	Screw-Clamp Terminals	2 1/4"	UL 489, UL Listed	00000000	000000
40	120V AC/240V AC/48V DC	50/60	10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC	Panel Board	Screw-Clamp Terminals	2 1/4"	UL 489, UL Listed	00000000	000000
50	120V AC/240V AC/48V DC	50/60	10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC	Panel Board	Screw-Clamp Terminals	2 1/4"	UL 489, UL Listed	00000000	000000
60	120V AC/240V AC/48V DC	50/60	10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC	Panel Board	Screw-Clamp Terminals	2 1/4"	UL 489, UL Listed	00000000	000000
Homeline Series
1 Pole—Toggle Style
15	120V AC/240V AC	50/60	10,000 A @ 120 V AC 10,000 A @ 240 V AC	Breaker Box	Snap On	1"	UL 489, UL Listed	00000000	00000
20	120V AC/240V AC	50/60	10,000 A @ 120 V AC 10,000 A @ 240 V AC	Breaker Box	Snap On	1"	UL 489, UL Listed	00000000	00000
30	120V AC/240V AC	50/60	10,000 A @ 120 V AC 10,000 A @ 240 V AC	Breaker Box	Snap On	1"	UL 489, UL Listed	00000000	00000
40	120V AC/240V AC	50/60	10,000 A @ 120 V AC 10,000 A @ 240 V AC	Breaker Box	Snap On	1"	UL 489, UL Listed	00000000	00000
50	120V AC/240V AC	50/60	10,000 A @ 120 V AC 10,000 A @ 240 V AC	Breaker Box	Snap On	1"	UL 489, UL Listed	000000000	00000
1 Pole with Tandem Circuit—Toggle Style
20	120V AC/240V AC	50/60	10,000 A @ 120 V AC 10,000 A @ 240 V AC	Breaker Box	Snap On	1"	UL 489, UL Listed	00000000	00000
2 Pole—Toggle Style
15	120V AC/240V AC	50/60	10,000 A @ 120 V AC 10,000 A @ 240 V AC	Breaker Box	Snap On	2"	UL 489, UL Listed	00000000	00000
20	120V AC/240V AC	50/60	10,000 A @ 120 V AC 10,000 A @ 240 V AC	Breaker Box	Snap On	2"	UL 489, UL Listed	00000000	00000
30	120V AC/240V AC	50/60	10,000 A @ 120 V AC 10,000 A @ 240 V AC	Breaker Box	Snap On	2"	UL 489, UL Listed	00000000	00000
40	120V AC/240V AC	50/60	10,000 A @ 120 V AC 10,000 A @ 240 V AC	Breaker Box	Snap On	2"	UL 489, UL Listed	00000000	00000
50	120V AC/240V AC	50/60	10,000 A @ 120 V AC 10,000 A @ 240 V AC	Breaker Box	Snap On	2"	UL 489, UL Listed	000000000	00000
60	120V AC/240V AC	50/60	10,000 A @ 120 V AC 10,000 A @ 240 V AC	Breaker Box	Snap On	2"	UL 489, UL Listed	000000000	00000
Homeline Series with 6mA Ground Fault Sensitivity
1 Pole—Toggle Style
20	120V AC	50/60	10,000 A @ 120 V AC	Breaker Box	Snap On	1"	UL 489, UL Listed	00000000	000000
2 Pole—Toggle Style
20	120V AC/240V AC	50/60	10,000 A @ 120 V AC 10,000 A @ 240 V AC	Breaker Box	Snap On	2"	UL 489, UL Listed	000000000	000000
30	120V AC/240V AC	50/60	10,000 A @ 120 V AC 10,000 A @ 240 V AC	Breaker Box	Snap On	2"	UL 489, UL Listed	000000000	000000

Siemens Load-Center Circuit Breakers

1 Pole

2 Pole

Use with Siemens EQ series breaker boxes. These circuit breakers meet UL 489 requirements for branch circuit protection, so they protect downstream equipment and wiring from overloads and short circuits. Because they are thermal-magnetic, they trip two different ways. They either trip when heat is generated slowly by consistent low-level overload current or quickly when the magnetic coil senses a high-current short circuit.

Breakthrough current is the maximum current that the circuit breaker can safely stop in the event of a short circuit.

1 Pole—Toggle Style
Current, A	Voltage	Frequency, Hz	Breakthrough Current	Wire Connection Type	Wd.	Specifications Met		Each
15	120V AC/240V AC	60	10,000 A @ 120 V AC 10,000 A @ 240 V AC	Screw-Clamp Terminals	1"	UL 489	0000000	000000
20	120V AC/240V AC	60	10,000 A @ 120 V AC 10,000 A @ 240 V AC	Screw-Clamp Terminals	1"	UL 489	0000000	00000
30	120V AC/240V AC	60	10,000 A @ 120 V AC 10,000 A @ 240 V AC	Screw-Clamp Terminals	1"	UL 489	0000000	00000
2 Pole—Toggle Style
15	120V AC/240V AC	60	10,000 A @ 120 V AC 10,000 A @ 240 V AC	Screw-Clamp Terminals	2"	UL 489	0000000	00000
20	120V AC/240V AC	60	10,000 A @ 120 V AC 10,000 A @ 240 V AC	Screw-Clamp Terminals	2"	UL 489	0000000	00000
30	120V AC/240V AC	60	10,000 A @ 120 V AC 10,000 A @ 240 V AC	Screw-Clamp Terminals	2"	UL 489	0000000	00000
40	120V AC/240V AC	60	10,000 A @ 120 V AC 10,000 A @ 240 V AC	Screw-Clamp Terminals	2"	UL 489	0000000	00000
50	120V AC/240V AC	60	10,000 A @ 120 V AC 10,000 A @ 240 V AC	Screw-Clamp Terminals	2"	UL 489	0000000	00000
60	120V AC/240V AC	60	10,000 A @ 120 V AC 10,000 A @ 240 V AC	Screw-Clamp Terminals	2"	UL 489	0000000	00000
70	120V AC/240V AC	60	10,000 A @ 120 V AC 10,000 A @ 240 V AC	Screw-Clamp Terminals	2"	UL 489	000000	00000

Cutler-Hammer Load-Center Circuit Breakers

1 Pole

2 Pole

Install these circuit breakers into Cutler-Hammer CH series breaker boxes. They meet UL 489 requirements for branch circuit protection, so they protect downstream equipment and wiring from overloads and short circuits. Because these circuit breakers are thermal-magnetic, they trip two different ways. They either trip when heat is generated slowly by consistent low-level overload current or quickly when the magnetic coil senses a high-current short circuit.

Breakthrough current is the maximum current that the circuit breaker can safely stop in the event of a short circuit.

1 Pole—Toggle Style
Current, A	Voltage	Frequency, Hz	Breakthrough Current	Wire Connection Type	Wd.	Specifications Met		Each
15	120V AC/240V AC	60	10,000 A @ 120 V AC 10,000 A @ 240 V AC	Screw-Clamp Terminals	3/4"	UL 489	0000000	000000
20	120V AC/240V AC	60	10,000 A @ 120 V AC 10,000 A @ 240 V AC	Screw-Clamp Terminals	3/4"	UL 489	0000000	00000
30	120V AC/240V AC	60	10,000 A @ 120 V AC 10,000 A @ 240 V AC	Screw-Clamp Terminals	3/4"	UL 489	0000000	00000
2 Pole—Toggle Style
15	120V AC/240V AC	60	10,000 A @ 120 V AC 10,000 A @ 240 V AC	Screw-Clamp Terminals	1 1/2"	UL 489	0000000	00000
20	120V AC/240V AC	60	10,000 A @ 120 V AC 10,000 A @ 240 V AC	Screw-Clamp Terminals	1 1/2"	UL 489	0000000	00000
30	120V AC/240V AC	60	10,000 A @ 120 V AC 10,000 A @ 240 V AC	Screw-Clamp Terminals	1 1/2"	UL 489	0000000	00000
40	120V AC/240V AC	60	10,000 A @ 120 V AC 10,000 A @ 240 V AC	Screw-Clamp Terminals	1 1/2"	UL 489	0000000	00000
50	120V AC/240V AC	60	10,000 A @ 120 V AC 10,000 A @ 240 V AC	Screw-Clamp Terminals	1 1/2"	UL 489	0000000	00000
60	120V AC/240V AC	60	10,000 A @ 120 V AC 10,000 A @ 240 V AC	Screw-Clamp Terminals	1 1/2"	UL 489	0000000	00000
70	120V AC/240V AC	60	10,000 A @ 120 V AC 10,000 A @ 240 V AC	Screw-Clamp Terminals	1 1/2"	UL 489	000000	00000

Space-Saver Panel-Mount Branch Circuit Breakers

Small enough to fit in tight spaces, these circuit breakers mount through panels and are UL 489-rated for branch circuit protection. They are thermal, so they use the heat generated in overcurrent situations to trip the breaker.

Breakthrough current is the maximum current that the circuit breaker can safely stop in the event of a short circuit.

For technical drawings and 3-D models, click on a part number.

1 Pole—Push Button Style
Current, A	Voltage	Frequency, Hz	Breakthrough Current	For Panel Cutout Dia.	Dp. Behind Panel	Mount Type	Mounting Fasteners Included	Quick-Disconnect Tab Wd.	Temp. Range, °F	Specifications Met		Each
15	120V AC	50/60	5,000 A @ 120 V AC	0.38"	1.43"	Screw On	Yes	0.25"	35° to 140°	UL 489, UL Listed, CSA Certified	0000000	000000
20	120V AC	50/60	5,000 A @ 120 V AC	0.38"	1.43"	Screw On	Yes	0.25"	35° to 140°	UL 489, UL Listed, CSA Certified	0000000	00000

High-Power Circuit Breakers

Protect an area of a facility that has high-powered equipment. These circuit breakers are also known as molded case circuit breakers. They meet UL 489 requirements for branch circuit protection. Because these breakers are thermal-magnetic, they trip two ways. They either trip when heat is generated slowly by consistent low-level overload current, or they trip quickly when the magnetic coil senses a high-current short circuit. A switch lets you adjust when these breakers magnetically trip, so you don't need to replace them as your application changes. These breakers have internal accessory slots to fit shunt trips, auxiliary contacts, and undervoltage trips, saving space in your setup.

Breakthrough current is the maximum current that the circuit breaker can safely stop in the event of a short circuit.

Shunt trips receive a signal from equipment to trip your circuit breaker in situations other than overload or short circuit conditions. For example, use them with a smoke detector to shut off power to a system in the event of a fire. 30A to 250A breakers can only have one shunt trip or undervoltage trip installed. 400A to 600A breakers can accommodate one shunt trip and one undervoltage trip at the same time.

Auxiliary contacts send a signal to other equipment when the circuit trips. They can activate a warning light, initiate a shutdown, or start a backup power source. Multiple auxiliary contacts can be used within one circuit breaker and can be placed in any of the accessory slots.

Undervoltage trips protect equipment from operating with less than their intended voltage by tripping a circuit breaker when the supply voltage drops below a set level. 30A to 250A breakers can only have one shunt trip or undervoltage trip installed. 400A to 600A breakers can accommodate one shunt trip and one undervoltage trip at the same time.

Install handles on the front cover of an electrical cabinet to turn these breakers on, off, or reset them without having to open the cabinet. Yet, these handles won’t prevent you from opening the electrical cabinet normally. You can also lock the handles in the on or off position with a padlock (not included) to prevent unauthorized changes to the circuit breaker.

For technical drawings and 3-D models, click on a part number.

Circuit Breakers

Circuit Breaker

3 Pole—Toggle Style
Current, A	Voltage	Frequency, Hz	Breakthrough Current	Inrush Current Setting, A	Mounting Location	For DIN Rail Size, mm	Mount Type	Ht.	Wd.	Dp.	Temp. Range, °F	Specifications Met		Each
30	480V AC/600YV AC/600V DC	50/60	65,000 A @ 240 V AC 25,000 A @ 480 V AC 14,000 A @ 600 V AC 14,000 A @ 125 V DC 50,000 A @ 250 V DC 50,000 A @ 500 V DC 50,000 A @ 600 V DC	150, 180, 210, 240, 270, 300	DIN Rail	35	Screw On	5.5"	3"	3"	-10° to 155°	UL 489, UL Listed, CE Marked, IEC 60947-2, IEC 81346-2	0000000	0000000
60	480V AC/600YV AC/600V DC	50/60	65,000 A @ 240 V AC 25,000 A @ 480 V AC 14,000 A @ 600 V AC 14,000 A @ 125 V DC 50,000 A @ 250 V DC 50,000 A @ 500 V DC 50,000 A @ 600 V DC	300, 360, 420, 480, 540, 600	DIN Rail	35	Screw On	5.5"	3"	3"	-10° to 155°	UL 489, UL Listed, CE Marked, IEC 60947-2, IEC 81346-2	0000000	000000
100	480V AC/600YV AC/600V DC	50/60	65,000 A @ 240 V AC 25,000 A @ 480 V AC 14,000 A @ 600 V AC 14,000 A @ 125 V DC 50,000 A @ 250 V DC 50,000 A @ 500 V DC 50,000 A @ 600 V DC	500, 600, 700, 800, 900, 1,000	DIN Rail	35	Screw On	5.5"	3"	3"	-10° to 155°	UL 489, UL Listed, CE Marked, IEC 60947-2, IEC 81346-2	0000000	000000
125	480V AC/600YV AC/600V DC	50/60	65,000 A @ 240 V AC 25,000 A @ 480 V AC 14,000 A @ 600 V AC 14,000 A @ 125 V DC 50,000 A @ 250 V DC 50,000 A @ 500 V DC 50,000 A @ 600 V DC	625, 750, 875, 1,000, 1,125, 1,250	DIN Rail	35	Screw On	5.5"	3"	3"	-10° to 155°	UL 489, UL Listed, CE Marked, IEC 60947-2, IEC 81346-2	0000000	00000000
150	600YV AC/600V AC/600V DC	50/60	85,000 A @ 240 V AC 35,000 A @ 480 V AC 18,000 A @ 600 V AC 50,000 A @ 250 V DC 50,000 A @ 500 V DC 50,000 A @ 600 V DC	750, 900, 1,050, 1,200, 1,350, 1,500	__	__	Screw On	7.3"	4.1"	3.3"	-10° to 155°	UL 489, UL Listed, CE Marked, IEC 60947-2, IEC 81346-2	0000000	00000000
200	600YV AC/600V AC/600V DC	50/60	85,000 A @ 240 V AC 35,000 A @ 480 V AC 18,000 A @ 600 V AC 50,000 A @ 250 V DC 50,000 A @ 500 V DC 50,000 A @ 600 V DC	1,000, 1,200, 1,400, 1,600, 1,800, 2,000	__	__	Screw On	7.3"	4.1"	3.3"	-10° to 155°	UL 489, UL Listed, CE Marked, IEC 60947-2, IEC 81346-2	0000000	00000000
225	600YV AC/600V AC/600V DC	50/60	85,000 A @ 240 V AC 35,000 A @ 480 V AC 18,000 A @ 600 V AC 50,000 A @ 250 V DC 50,000 A @ 500 V DC 50,000 A @ 600 V DC	1,125, 1,350, 1,575, 1,800, 2,025, 2,250	__	__	Screw On	7.3"	4.1"	3.3"	-10° to 155°	UL 489, UL Listed, CE Marked, IEC 60947-2, IEC 81346-2	0000000	00000000
250	600YV AC/600V AC/600V DC	50/60	85,000 A @ 240 V AC 35,000 A @ 480 V AC 18,000 A @ 600 V AC 50,000 A @ 250 V DC 50,000 A @ 500 V DC 50,000 A @ 600 V DC	1,250, 1,500, 1,750, 2,000, 2,250, 2,500	__	__	Screw On	7.3"	4.1"	3.3"	-10° to 155°	UL 489, UL Listed, CE Marked, IEC 60947-2, IEC 81346-2	0000000	00000000
400	600V AC/600YV AC/750V DC	50/60	85,000 A @ 240 V AC 35,000 A @ 480 V AC 18,000 A @ 600 V AC 50,000 A @ 600 V DC 10,000 A @ 750 V DC	2,000, 2,400, 2,800, 3,200, 3,600, 4,000	__	__	Screw On	9.8"	5.4"	5.4"	-10° to 155°	UL 489, UL Listed, CE Marked, IEC 60947-2, IEC 81346-2	0000000	00000000
600	600YV AC/600V AC/750V DC	50/60	85,000 A @ 240 V AC 35,000 A @ 480 V AC 18,000 A @ 600 V AC 50,000 A @ 600 V DC 10,000 A @ 750 V DC	3,000, 3,600, 4,200, 4,800, 5,400, 6,000	__	__	Screw On	9.8"	5.4"	5.4"	-10° to 155°	UL 489, UL Listed, CE Marked, IEC 60947-2, IEC 81346-2	0000000	00000000

Shunt Trips

Shunt Trip

Voltage	Current	Frequency, Hz	Wire Connection Type	Ht.	Wd.	Dp.	Temp. Range, °F	Specifications Met		Each
110-127V AC	7.4 A @ 110 V AC	50/60	Screw-Clamp Terminals	2.56"	0.85"	1.23"	-10° to 155°	UL 489, UL Listed, IEC 60947-2	0000000	0000000

Auxiliary Contacts

Auxiliary Contact

Voltage	Current, A	Frequency, Hz	Industry Designation	No. of Circuits Controlled	Switch Starting Position	Wire Connection Type	Ht.	Wd.	Dp.	Temp. Range, °F	Specifications Met		Each
24-300V AC/24-250V DC	6	50/60	DPST	2	1 Off (Normally Open) and 1 On (Normally Closed)	Screw-Clamp Terminals	2.57"	0.28"	1.36"	-10° to 155°	UL 489, UL Listed, IEC 60947-2	0000000	0000000

Undervoltage Trips

Undervoltage Trip

Voltage	Current	Frequency, Hz	Wire Connection Type	Ht.	Wd.	Dp.	Temp. Range, °F	Specifications Met		Each
120-127V AC	0.01 A @ 120 V AC	50/60	Screw-Clamp Terminals	2.56"	1.01"	1.13"	-10° to 155°	UL 489, UL Listed, IEC 60947-2	0000000	0000000

Handles

Handle

For Circuit Breaker Current, A	Ht.	Wd.	Projection	Mounting Fasteners Included	For Max. Padlock Shackle Dia.	Padlock Included	Temp. Range, °F	Environmental Rating	Specifications Met		Each
30, 60, 100, 125	2.95"	2.95"	2.16"	Yes	3/8"	No	-10° to 155°	IP65, NEMA 4X, NEMA 12	IEC 60947-2	0000000	0000000
150, 200, 225, 250	2.95"	2.95"	2.16"	Yes	3/8"	No	-10° to 155°	IP65, NEMA 4X, NEMA 12	IEC 60947-2	0000000	000000
400, 600	2.95"	2.95"	2.16"	Yes	3/8"	No	-10° to 155°	IP65, NEMA 4X, NEMA 12	IEC 60947-2	0000000	000000